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Permanent Fail
3.3 Voltage Imbalance at Rest Permanent Fail
The device can permanently disable the battery pack in case of a voltage difference between the cells in a stack
while at rest.
Status
CellVoltage0..1() < VIMR:Check Voltage OR
Normal
|Current()| > VIMR:Check Current OR
Δ(CellVoltage0..1()) < VIMR:Delta Threshold
Any(CellVoltage0..1()) ≥ VIMR:Check Voltage AND
Alert
|Current()| < VIMR:Check Current for VIMR:Duration AND
Δ(CellVoltage0..1()) ≥ VIMR:Delta Threshold
Any(CellVoltage0..1()) ≥ VIMR:Check Voltage AND
|Current()| < VIMR:Check Current for VIMR:Duration AND
Trip
Δ(CellVoltage0..1()) ≥ VIMR:Delta Threshold for VIMR:Delta
Delay
3.4 Voltage Imbalance Active Permanent Fail
The device can permanently disable the battery pack in case of a voltage difference between the cells in a stack
while active.
Status
CellVoltage0..13() < VIMA:Check Voltage OR
Normal
|Current()| <VIMA:Check Current OR
Δ(CellVoltage0..1()) < VIMA:Delta Threshold
Any(CellVoltage0..1()) ≥ VIMA:Check Voltage AND
Alert
|Current()| >VIMA:Check Current for VIMA: Duration AND
Δ(CellVoltage0..1()) ≥ VIMA:Delta Threshold
Any(CellVoltage0..1()) ≥ VIMA:Check Voltage AND
Trip
|Current()| >VIMA:Check Current for VIMA: Duration AND
Δ(CellVoltage0..1()) ≥ VIMA:Delta Threshold for VIMA:Delay
3.5 Charge FET Permanent Failure
3.5.1 Description
The device will enter PERMANENT FAILURE mode in case the charge (CHG) FET is not working properly.
Status
Condition
Normal
CHG FET off AND Current() < CFET:OFF Threshold
Alert
CHG FET off AND Current() ≥ CFET:OFF Threshold
CHG FET off AND Current() continuously ≥ CFET:OFF Threshold
Trip
for CFET:OFF Delay duration
Class
Subclass
Permanent Fail
CFET
Permanent Fail
CFET
3.5.2 Feature Enable/Disable
The feature is enabled when CFETF is set in Enable PF C.
3.6 Discharge FET Permanent Failure
3.6.1 Description
The device will enter PERMANENT FAILURE mode in case the discharge (DSG) FET is not working properly.
20
BQ28Z610-R2
Condition
Condition
Table 3-1. CFET Data Flash Configuration
Name
OFF Threshold
Delay
Copyright © 2022 Texas Instruments Incorporated
PFAlert()[VIMR] = 0
PFAlert()[VIMR] = 1
PFAlert()[VIMR] = 0
PFStatus()[VIMR] = 1
BatteryStatus()[TCA] = 1
BatteryStatus()[TDA] = 1
PFAlert()[VIMA] = 0
PFAlert()[VIMA] = 1
PFAlert()[VIMA] = 0
PFStatus()[VIMA] = 1
BatteryStatus()[TCA] = 1
BatteryStatus()[TDA] = 1
Action
PFAlert()[CFETF] = 0
PFAlert()[CFETF] = 1
PFAlert()[CFETF] = 0
PFStatus()[CFETF] = 1
Type
Min Value
Max Value
I2
0
500
U1
0
255
www.ti.com
Action
Action
Default
Unit
Value
5
mA
5
s
SLUUCO0 – APRIL 2022
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